CY7C1021D
Switching Waveforms
Figure 4. Read Cycle No. 1 (Address Transition Controlled) [13, 14]
tRRCC
ADDRESS
DATA OUT
tAA
tOHA
PREVIOUS DATA VALID
DATA VALID
ADDRESS
CE
OE
BHE, BLE
DATA OUT
VCC
SUPPLY
CURRENT
Figure 5. Read Cycle No. 2 (OE Controlled) [14, 15]
tRC
tACE
tDOE
tLZOE
tDBE
tLZBE
HIGH IMPEDANCE
tLZCE
tPU
50%
DATA VALID
tHZOE
tHZCE
tHZBE
HIGH
IMPEDANCE
tPD
ICC
50%
ISB
Notes
13. Device is continuously selected. OE, CE, BHE and/or BLE = VIL.
14. WE is HIGH for read cycle.
15. Address valid prior to or coincident with CE transition LOW.
Document Number: 38-05462 Rev. *M
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